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Standard Errors for National Trends in International Large-Scale Assessments in the Case of Cross-National Differential Item Functioning
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Sachse, Karoline A.; Haag, Nicole – Applied Measurement in Education, 2017
Standard errors computed according to the operational practices of international large-scale assessment studies such as the Programme for International Student Assessment's (PISA) or the Trends in International Mathematics and Science Study (TIMSS) may be biased when cross-national differential item functioning (DIF) and item parameter drift are…
Descriptors: Error of Measurement, Test Bias, International Assessment, Computation
Item Parameter Drift in a Time-Varying Predictor
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Lee, HyeSun – Applied Measurement in Education, 2018
The current simulation study examined the effects of Item Parameter Drift (IPD) occurring in a short scale on parameter estimates in multilevel models where scores from a scale were employed as a time-varying predictor to account for outcome scores. Five factors, including three decisions about IPD, were considered for simulation conditions. It…
Descriptors: Test Items, Hierarchical Linear Modeling, Predictor Variables, Scores
Estimating Variance Components from Sparse Data Matrices in Large-Scale Educational Assessments
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DeMars, Christine – Applied Measurement in Education, 2015
In generalizability theory studies in large-scale testing contexts, sometimes a facet is very sparsely crossed with the object of measurement. For example, when assessments are scored by human raters, it may not be practical to have every rater score all students. Sometimes the scoring is systematically designed such that the raters are…
Descriptors: Educational Assessment, Measurement, Data, Generalizability Theory
The Language Factor in Elementary Mathematics Assessments: Computational Skills and Applied Problem Solving in a Multidimensional IRT Framework
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Hickendorff, Marian – Applied Measurement in Education, 2013
The results of an exploratory study into measurement of elementary mathematics ability are presented. The focus is on the abilities involved in solving standard computation problems on the one hand and problems presented in a realistic context on the other. The objectives were to assess to what extent these abilities are shared or distinct, and…
Descriptors: Elementary School Mathematics, Mathematics Tests, Mathematics Skills, Problem Solving
Examining Sources of Gender DIF in Mathematics Assessments Using a Confirmatory Multidimensional Model Approach
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Mendes-Barnett, Sharon; Ercikan, Kadriye – Applied Measurement in Education, 2006
This study contributes to understanding sources of gender differential item functioning (DIF) on mathematics tests. This study focused on identifying sources of DIF and differential bundle functioning for boys and girls on the British Columbia Principles of Mathematics Exam (Grade 12) using a confirmatory SIBTEST approach based on a…
Descriptors: Gender Differences, Test Bias, Mathematics Tests, Multidimensional Scaling
Investigation of Student Growth Recovery in a Fixed-Item Linking Procedure with a Fixed-Person Prior Distribution for Mixed-Format Test Data
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Paek, Insu; Young, Michael J. – Applied Measurement in Education, 2005
When the item response theory (IRT) model uses the marginal maximum likelihood estimation, person parameters are usually treated as random parameters following a certain distribution as a prior distribution to estimate the structural parameters in the model. For example, both PARSCALE (Muraki & Bock, 1999) and BILOG 3 (Mislevy & Bock,…
Descriptors: Item Response Theory, Test Items, Maximum Likelihood Statistics, Test Bias